/*
Theme Name: Fujinari School (Phase 1)
Author: Fujinari
Description: Phase 1 MVP theme for the online school. Works with Fujinari Online School Core (MU) plugin.
Version: 1.0.0
Text Domain: fujinari-school
*/

:root {
  --fg: #111;
  --muted: #666;
  --border: #e5e5e5;
  --bg: #fff;
  --surface: #fafafa;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
body {
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
}
a {
  color: inherit;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.nav a {
  opacity: 0.85;
  text-decoration: none;
}
.nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

.btn {
  display: inline-block;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--fg);
  text-decoration: none;
}
.btn.primary {
  background: var(--fg);
  color: #fff;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}
.muted {
  color: var(--muted);
}

.hero {
  padding: 24px 0 10px;
}
.hero h1 {
  margin: 0 0 6px;
  font-size: 28px;
}
.hero p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 28px;
  padding: 18px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}